---

yaml --- r: 62216 b: refs/heads/master c: d080d39 h: refs/heads/master v: v3
git-mirror · Jul 17, 2007 · 7f1a0c5 · 7f1a0c5
1 parent 39e78e4
commit 7f1a0c5
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Showing 3 changed files with 30 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: cd378f18cf73d92bf0b6e1e6b5759b5dd729a9f2
+refs/heads/master: d080d397f97dd185ff48ef933be09a104d47fba5
diff --git a/trunk/Documentation/kernel-parameters.txt b/trunk/Documentation/kernel-parameters.txt
@@ -1859,6 +1859,9 @@ and is between 256 and 4096 characters. It is defined in the file
 			vdso=1: enable VDSO (default)
 			vdso=0: disable VDSO mapping
 
+	vector=		[IA-64,SMP]
+			vector=percpu: enable percpu vector domain
+
 	video=		[FB] Frame buffer configuration
 			See Documentation/fb/modedb.txt.
 

diff --git a/trunk/arch/ia64/kernel/irq_ia64.c b/trunk/arch/ia64/kernel/irq_ia64.c
@@ -267,10 +267,36 @@ void __setup_vector_irq(int cpu)
 	}
 }
 
+#if defined(CONFIG_IA64_GENERIC)
+static enum vector_domain_type {
+	VECTOR_DOMAIN_NONE,
+	VECTOR_DOMAIN_PERCPU
+} vector_domain_type = VECTOR_DOMAIN_NONE;
+
+static cpumask_t vector_allocation_domain(int cpu)
+{
+	if (vector_domain_type == VECTOR_DOMAIN_PERCPU)
+		return cpumask_of_cpu(cpu);
+	return CPU_MASK_ALL;
+}
+
+static int __init parse_vector_domain(char *arg)
+{
+	if (!arg)
+		return -EINVAL;
+	if (!strcmp(arg, "percpu")) {
+		vector_domain_type = VECTOR_DOMAIN_PERCPU;
+		no_int_routing = 1;
+	}
+	return 1;
+}
+early_param("vector", parse_vector_domain);
+#else
 static cpumask_t vector_allocation_domain(int cpu)
 {
 	return CPU_MASK_ALL;
 }
+#endif
 
 
 void destroy_and_reserve_irq(unsigned int irq)